SYMPTOMS

When purging either the sample or wash syringes, the system errors with a move h/w fault

Fault can also occur post-injection, when the needle is being washed

ENVIRONMENT

ACQUITY UPLC Sample Manager

CAUSE

The clear tubing on the volume detection device, which is connected to port 2 of the sample manager pod, has black contamination in the tubing, causing a partial blockage, which in turn causes the error.